Developments in Kosovo on Monday:

_ NATO bombs Yugoslavia for a sixth straight day, this time directly targeting Serb and Yugoslav units involved in atrocities.

_ Missiles explode near military base on Belgrade's outskirts and around airport in Montenegren capital of Podgorica, but there is no immediate word on injuries or damage.

_ Thousands more refugees leave Kosovo as part of one of the largest postwar exoduses in Europe. NATO officials say between 80,000-100,000 have left Kosovo since the airstrikes began, and border towns in Albania and Macedonia are overwhelmed.

_ The Clinton administration accuses the Serbs of engaging in genocide against ethnic Albanians in Kosovo and says Yugoslav President Slobodan Milosevic could be tried as a war criminal.

_ Pentagon says attacks against Serb troops is complicated because they're using refugees as human shields.

_ NATO says it has reliable reports that Fehmi Agani, a close aide to ethnic Albanian leader Ibrahim Rugova, and four other prominent ethnic Albanians have been executed by Serb forces.

_ Yugoslav officials remain defiant, saying NATO's ``shameful'' attacks are only inflaming the crisis in Kosovo. The Serbian Media Center in Pristina, the capital of Kosovo, says local officials know nothing about Agani's alleged killing.

_ Sen. John McCain of Arizona, a potential Republican presidential candidate, urges the Clinton administration and NATO not to rule out sending ground troops to Kosovo.

_ Russia's prime minister, Yevgeny Primakov, announces plans to go to Belgrade on Tuesday in a new bid to end the crisis. Russia, which has cultural and historic ties to Serbia, strongly opposes NATO's air campaign.

_ Fighting breaks out at a rally in Prague, leaving one man dead and two wounded. Thousands turn out for other protests _ both for and against NATO airstrikes _ in London, New York, Israel, Portugal, Romania and Greece.