LONDON—The Group of Seven scolded both China and Russia on Wednesday, casting the Kremlin as malicious and Beijing as a bully, and expressed support for Taiwan and Ukraine. Founded in 1975 as a forum for the West’s richest nations to discuss crises such as the OPEC oil embargo, the G-7 this week addressed what it perceives as the biggest current threats: China, Russia and the coronavirus pandemic. G-7 foreign ministers, in a 12,400-word communique, said Russia was trying to undermine democracies and threatening Ukraine while the Chinese communist regime was guilty of human rights abuses and of using its economic clout to bully others. There was, however, little concrete action mentioned in the communique that would unduly worry either Chinese leader Xi Jinping or Russian President Vladimir Putin. The G-7 said it would bolster collective efforts to stop China’s “coercive economic policies” and to counter Russian disinformation—part of a move …