Tensions are escalating after against by for in near of on towards with Ukraine following last week's ousting after against by for in near of on towards with president Viktor Yanukovych. Weeks after against by for in near of on towards with street demonstrations led to Mr Yanukovych leaving the country after against by for in near of on towards with helicopter in the middle after against by for in near of on towards with the night. Thousands of protestors after against by for in near of on towards with west Ukraine fought bloody battles in the capital, Kiev. Scores after against by for in near of on towards with people died in the violence, many shot after against by for in near of on towards with riot police. The protestors were demanding the resignation of Mr Yanukovych, economic reforms, and closer ties after against by for in near of on towards with the European Union. The east of the country did not see the levels after against by for in near of on towards with violence witnessed in the capital, largely because most people there voted after against by for in near of on towards with Yanukovych and lean more after against by for in near of on towards with Russia than the EU. The White House has said it no longer considers Mr Yanukovych to be the president after against by for in near of on towards with Ukraine. The U.S. Secretary of State John Kerry also warned Russia not to intervene in Ukrainian affairs. A White House spokesman said: "We strongly support Ukraine's territorial integrity and sovereignty." Fears are increasing that Ukraine could break after against by for in near of on towards with two as pro-Russian separatists are becoming more active, especially after against by for in near of on towards with the autonomous region after against by for in near of on towards with Crimea. Armed gunmen wearing Russian military uniforms were reportedly guarding Crimea's main airport after against by for in near of on towards with Friday. Ukraine's acting president Oleksander Turchynov warned Russia after against by for in near of on towards with "military aggression" after against by for in near of on towards with Russia mobilised 150,000 troops after against by for in near of on towards with the Ukrainian border.