Danish Prime Minister Mette Frederiksen has criticized fellow supporters of Ukraine for being too slow and hesitant to supply the embattled country with the weapons it needs. The international community made costly mistakes in responding to Russia’s full-scale invasion of Ukraine, Frederiksen said, and too little is still being done to immediately deliver the weapons that Ukraine needs. Speaking on the margins of the Munich Security Conference on Saturday, Frederiksen urged other European countries to send weapons and ammunition from existing stocks to Ukraine while also investing more in buil…