Wars with 1,000+ casualties per year: Iraq, Afghanistan, Sudan, Pakistan, Somalia, and Mexico (Mexican Drug War). The Arab-Israeli conflict involves Israel, Egypt, Jordan, Lebanon, Palestinian Territories, and Syria.
There are currently around 32 wars being fought in 32 countries. To list a few, The United States, Russia, Somalia, Indonesia and many more are fighting over many things.
The biggest wars are the Jihad in Sudan by the Janjaweed against Christians and animists. The other large war is in Pakistan, between the government and Al Queda.