India and Pakistan have been engaged in a long-standing conflict over the disputed region of Kashmir. The two countries have fought three wars over Kashmir, in 1947, 1965, and 1999. The conflict has also led to numerous ceasefire violations and cross-border attacks.
North Korea and South Korea
North Korea and South Korea are technically still at war, as the Korean War never officially ended. The two countries have been engaged in a tense standoff for decades, and there is a constant threat of renewed conflict.
China and Taiwan
China considers Taiwan to be a breakaway province, and has repeatedly threatened to use military force to reunify the island with the mainland. Taiwan, on the other hand, considers itself to be an independent country, and has vowed to defend itself against any military aggression from China.
Russia and Ukraine
Russia and Ukraine have been engaged in a conflict since 2014, when Russia annexed the Crimean Peninsula. The conflict has also spread to eastern Ukraine, where pro-Russian separatists have been fighting against Ukrainian government forces.
Israel and Palestine
Israel and Palestine have been engaged in a conflict for decades over the disputed land of Israel. The conflict has led to numerous wars, as well as ongoing violence and human rights abuses.