KYIV—Ukrainian Foreign Minister Dmytro Kuleba on Sunday urged people to ignore “apocalyptic predictions” about an imminent Russian invasion, saying his country was strong and had unprecedented international support. President Volodymyr Zelenskiy said a week ago Ukraine was not a sinking Titanic and accused Washington and media of fueling panic that weighed on the economy when there were “no tanks in the streets.” “Today, Ukraine has a strong army, unprecedented international support, and Ukrainians’ faith in their country,” Kuleba said in a tweet. “The enemy should be afraid of us, not us of them.” A day earlier two U.S. officials said that Russia may be ready for a full-scale invasion of Ukraine by mid-February as it had in place about 70 percent of the combat power it believed it would need and was sending more battalion tactical groups to the border. White House national security adviser Jake Sullivan said on Sunday …