By Andrea Shalal WASHINGTON (Reuters) -Leaders from the Group of Seven (G7) rich nations have assured Ukrainian officials that they will continue to provide financial support for Ukraine as it battles invading Russian forces, Germany’s finance minister said on Thursday. The reconstruction of Ukraine will require joint efforts from international financial institutions, the G7, the United States and others, Christian Lindner told a news conference in Washington on the sidelines of the annual meetings of the International Monetary Fund and World Bank. “The G7 yesterday assured (Ukrainian Finance …