NATO foreign ministers were meeting in the Czech capital Friday to prepare for this summer’s leaders’ summit as the alliance boosts support for Ukraine and countries one-by-one remove restrictions on how Kyiv can use western-supplied weaponry to combat Russia’s invasion. A day after U.S. President Joe Biden gave Ukraine the go-ahead to use American munitions to strike inside Russia for the limited purpose of defending Kharkiv, numerous ministers, including those from the Netherlands, Finland, Poland and Germany, expressed approval of the decision, saying that Ukraine has the absolute right to defend itself from attacks originating on Russian soil. The chorus of allied voices backing greater leeway for Ukraine to use their weapons grew louder in recent weeks after Russia launched artillery strikes on Kharkiv from its territory, prompting appeals for help from Kyiv.