After the founding of the P.R.C., China's foreign policy initially focused on solidarity with the Soviet Union and other communist countries. In 1950, China sent the People's Liberation Army into North Korea to help North Korea halt the UN offensive that was approaching the Yalu River. After the conclusion of the Korean conflict, China sought to balance its identification as a member of the Soviet bloc by establishing friendly relations with Pakistan and other Third World countries, particularly in Southeast Asia.

In the 1960s, Beijing competed with Moscow for political influence among communist parties and in the developing world generally. Following the 1968 Soviet invasion of Czechoslovakia and clashes in 1969 on the Sino-Soviet border, Chinese competition with the Soviet Union increasingly reflected concern over China's own strategic position.

In late 1978, the Chinese also became concerned over Vietnam's efforts to establish open control over Laos and Cambodia. In response to the Vietnamese invasion of Cambodia, China fought a brief border war with Vietnam (February-March 1979) with the stated purpose of "teaching Vietnam a lesson."

Chinese anxiety about Soviet strategic advances was heightened following the Soviet Union's December 1979 invasion of Afghanistan. Sharp differences between China and the Soviet Union persisted over Soviet support for Vietnam's continued occupation of Cambodia, the Soviet invasion of Afghanistan, and Soviet troops along the Sino-Soviet border and in Mongolia--the so-called "three obstacles" to improved Sino-Soviet relations.

In the 1970s and 1980s China sought to create a secure regional and global environment for itself and to foster good relations with countries that could aid its economic development. To this end, China looked to the West for assistance with its modernization drive and for help in countering Soviet expansionism, which it characterized as the greatest threat to its national security and to world peace.

China maintained its consistent opposition to "superpower hegemony," focusing almost exclusively on the expansionist actions of the Soviet Union and Soviet proxies such as Vietnam and Cuba, but it also placed growing emphasis on a foreign policy independent of both the U.S. and the Soviet Union. While improving ties with the West, China continued to follow closely economic and other positions of the Third World nonaligned movement, although China was not a formal member.

In the immediate aftermath of Tiananmen crackdown in June 1989, many countries reduced their diplomatic contacts with China as well as their economic assistance programs. In response, China worked vigorously to expand its relations with foreign countries, and by late 1990, had reestablished normal relations with almost all nations. Following the collapse of the Soviet Union in late 1991, China also opened diplomatic relations with the republics of the former Soviet Union.

In recent years, Chinese leaders have been regular travelers to all parts of the globe, and China has sought a higher profile in the UN through its permanent seat on the United Nations Security Council and other multilateral organizations. Closer to home, China has made efforts to reduce tensions in Asia, hosting the Six-Party Talks on North Koreaís nuclear weapons program, cultivating a more cooperative relationship with members of the Association of Southeast Asian Nations, and participating in the ASEAN Regional Forum. Its moves to play a greater regional leadership role in Asia and, especially, the success of its "charm offensive" in Southeast Asia are examples of a new, more mature diplomacy. China is also working hard to strengthen ties with countries in South Asia, including India. Following Premier Wenís 2005 visit to India, the two sides have moved to increase commercial and cultural ties, as well as to resolve longstanding border disputes. China has likewise improved ties with Russia, with President Putin visiting Beijing in April 2006. A second round of Russia-China joint military exercises is scheduled for 2007. China has played a prominent role in the Shanghai Cooperation Organization (SCO), a regional grouping that also includes Russia and the Central Asian nations of Kazakhstan, Kyrgyzstan, Tajikistan, and Uzbekistan. Beijing has resolved many of its border and maritime disputes, notably including a November 1997 agreement with Russia that resolved almost all outstanding border issues and a 2000 agreement with Vietnam to resolve some differences over their maritime border, though disagreements remain over islands in the South China Sea. Tensions with Japan continue, fueled by longstanding and emotionally charged disputes over history and competing claims to portions of the East China Sea. China has played a constructive role in support of peacekeeping operations in Sudan and has stated publicly that it shares the international communityís concern over Iranís nuclear program. Set against this has been an effort on the part of China to improve ties to countries such as Iran, Sudan, Zimbabwe, and Venezuela, which are sources of oil and other resources and which welcome Chinaís non-conditional assistance and investment.