India Celebrates 66th Republic Day
President Barack Obama and Prime Minister of India Narendra Modi during the ceremony of 66th Republic day of India on January 26, 2015 in New Delhi, India.  Photograph by Sonu Mehta — Hindustan Times via Getty Images

How the U.S. can strengthen economic and military ties with India

President Barack Obama has finally resumed progress toward one of the most important strategic goals in American foreign policy: strengthening America’s alliance with India. President Obama’s visit to New Delhi in January as the chief guest of India’s Republic Day celebrations followed Prime Minister Narendra Modi’s September state visit to the United States. For the Obama administration and its successor, allying with the world’s largest democracy will represent a welcome seismic shift in the balance of power.

Washington and New Delhi share common interests. The United States and India are the world’s two largest democracies with a similar commitment to the Anglo-American rule of law. Economic exchange between the nations is booming. Bilateral U.S.-India trade has increased five-fold since 2001 to nearly $100 billion. President Obama and Modi pledged to raise it another five-fold. The Indian economy presently produces $1.876 trillion a year, making it an attractive venue for American investors. Economic interdependence has also laid the foundations for closer military cooperation. Last year, India imported approximately $2 billion in military equipment from the United States, a significant increase from $237 million in 2009. The U.S. recently surpassed Russia as India’s primary arms supplier. Today, the U.S. is the Indian Army’s most frequent partner for military exercises.

America and India’s economies and political systems benefit from free trade and regional stability. China’s rise, and the expansion of its military and territorial aims, poses a threat to both. China’s border with India has sparked war before. Beijing’s aggressive claims to islands in the South China Seas reveal Beijing’s territorial ambitions have grown alongside its economy. China seeks to replace the United States as the leading power in Asia. India is pulling out of nonalignment just as the reality of disorder has begun to intrude. Since Pakistan is concerned about its nuclear-armed neighbor and depends on American aid dollars to the tune of $20 billion over just the past decade, necessity will temper its displeasure.

But the U.S. and India need to do more to secure regional stability and temper China’s ambitions. A defense pact could become the first step in a broader Asian alliance that would guarantee each nation’s security, build their economic ties, and commit them to protect the territorial status quo. An Asian defense and economic network would cement India’s recent turn away from Moscow and recognize its leading role in the region. It would keep the U.S. committed to the region at a time of shrinking defense budgets and rising global commitments.

India, the U.S., and their regional allies could form a Concert of Asia. These nations already share a commitment to free markets and democracy. It will have as its focus the moderation of China’s rise, which threatens to disrupt the decades of stability that have unwritten the economic miracles in Japan, Korea, Taiwan, Hong Kong, Singapore, and now even China itself. It will also help contain other threats to regional stability: Pakistan’s religious extremism, terrorist networks, military overlords, and Russian aggression. This partnership has obvious economic and security advantages. In 2013, just the export-driven Asian Tiger (excluding Hong Kong, now part of China) and Tiger Cub economies had a combined GDP of almost $4 trillion. To export-oriented nations, military defense is of paramount importance.

A new Concert of Asia for the 21st Century could mark the way for closer economic ties. An encouraging sign is the upswing in U.S. investment in ASEAN countries to $204 billion in 2013, a rise of 9.1% from 2012. The extant seven-member Asia-Pacific Trade Agreement (APTA) is simply inadequate to take advantage of this momentum. Primarily, it has no defense component. Moreover, not only does it lack a key player like the U.S. to help balance this trade configuration, it also contains nations like Mongolia whose inclusion in the APTA has led to special concessions to less developed countries. Yet even the APTA’s signatories have recognized that without an effective and equal investor-state dispute settlement mechanism which protects foreign investors’ rights, any such agreement is a doomed non-starter. The South Asian Free Trade Area, which deals primarily with reducing customs duties, is also flawed. A stronger model is the Comprehensive Trade and Economic Agreement (CETA) between Canada and the EU, a treaty projected to buoy trade, fortify economic relations among signatories and create jobs as well as to increase $13.6 billion for European GDP.

Many of the Concert’s prospective signatories who are not Tigers or Tiger Cubs are parties to the Association of South East Asian Nations (ASEAN), which traded goods and services with America totaling $241.7 billion in 2013. But China, Japan and the EU are the leading trade partners to ASEAN and the European Union is miles ahead as the largest investor in ASEAN nations. ASEAN is being held back by the reputational deficit of legal and militaristic instability, particularly with the frequency of coups and martial law in Thailand, Cambodia and Myanmar. An alliance with India and the United States, which are stable and secure democracies with both serious military capability and the rule of law on their side, will diminish these complications.

A Concert of Asia will signal to the world markets and to diplomatic friends and foes alike that India and the United States, not to mention their other allies, will help secure the stability necessary for further economic growth. The high military spending by Asian countries reflects the deficiency of trust in the region, which this concert will help alleviate. The United States, India and their Asian trade partners are in it together.

John Yoo is the Heller Professor of Law at the University of California at Berkeley and former Deputy Assistant U.S. Attorney General. Riddhi Dasgupta is an international law expert and author of ​​ International Interplay. Views expressed are their own.

Watch more business news from Fortune:

All products and services featured are based solely on editorial selection. FORTUNE may receive compensation for some links to products and services on this website.

Quotes delayed at least 15 minutes. Market data provided by Interactive Data. ETF and Mutual Fund data provided by Morningstar, Inc. Dow Jones Terms & Conditions: http://www.djindexes.com/mdsidx/html/tandc/indexestandcs.html. S&P Index data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. Terms & Conditions. Powered and implemented by Interactive Data Managed Solutions