By Andrius Sytas RUKLA, Lithuania (Reuters) -NATO must do more to protect itself against Russia and President Vladimir Putin, German Defence Minister Christine Lambrecht said on Saturday, because we “cannot know how far Putin’s delusions of grandeur can go”. “One thing is certain: the current situation means we need to do more together,” Lambrecht said while visiting German troops deployed in Lithuania. “The brutal Russian war of aggression in Ukraine is getting more and more brutal and unscrupulous… Russia’s threat of nuclear weapons shows that Russian authorities have no scruples.” The Uni…