- Former U.S. Secretary of State Henry Kissinger told the World Economic Forum in Davos via video link that Russia must be given the opportunity to one day rejoin the international system following any peace deal in Ukraine.- Kissinger, who served under presidents Nixon and Ford, also said U.S. military support of Ukraine should continue until a cease-fire line is reached or accepted in preliminary discussions.Former U.S. Secretary of State Henry Kissinger on Tuesday said Russia must be given the opportunity to one day rejoin the international system following any peace deal in Ukraine and dialogue with the country must be ongoing."This may seem very hollow to nations that have been under Russian pressure for much of the Cold War period," Kissinger told the World Economic Forum in Davos, Switzerland, via video link.He was a key part of the U.S. detente with the Soviet Union and rapprochement with China, and oversaw hugely controversial decisions including bombing and military operations in Cambodia."