(Reuters) – The United States and its allies pledged new packages of ever heavier weapons for Ukraine during a meeting on Tuesday at a German air base, brushing off a threat from Moscow that their support for Kyiv could lead to nuclear war. SPILLOVER INTO MOLDOVA? * Ukraine accused Moscow on Tuesday of trying to drag Moldova’s breakaway region of Transdniestria into its war on Kyiv after authorities in the Moscow-backed region, adjacent to southwest Ukraine, said they had been targeted by a series of attacks. DIPLOMACY, SANCTIONS, AID * The United States said the world was galvanized against R…