A maritime drone self-detonated on Friday in Romania's Black Sea port of Constanta near an oil terminal, without causing casualties, as Ukraine accused Russia of jamming one of its vessels before it drifted into Romanian waters.The explosion was the second major incident in a populated area in Romania on NATO's eastern flank in just a week as the spillover threat increases from the war in Ukraine, which has been fighting against a full-scale Russian invasion since 2022…