Poland prevented a direct threat to one of its border crossings with Ukraine overnight, Prime Minister Donald Tusk said in Bratislava. His remarks followed drone strikes on a border crossing between Ukraine and Moldova in the Odesa region that killed two people. Tusk said Russia had used provocative attacks on border crossings and that Poland, other countries and Europe’s eastern flank must prepare for possible further incidents. He also said a precise CIA (U.S. intelligence agency) report about events in coming months matched his warnings, while Russia had not immediately commented.