Russia pushes second meeting in Istanbul, Ukraine tells Moscow to pony up ceasefire terms first. Russian President Vladimir Putin has amassed some 50,000 troops on Ukraine’s northern border despite a united push by the U.S. and Ukraine to get Moscow to enter into "meaningful" ceasefire negotiations. Ukrainian President Volodymyr Zelenskyy on Wednesday warned that Putin is preparing a massive summer offensive in a move to push Ukraine’s troops out of Russia’s Kursk region, and to launch a new invasion into Ukraine’s Sumy region – a mere 200 miles from the capital city of Kyiv. Zelenskyy reiterated this week that he...