The American Embassy in Kyiv is urging all U.S. citizens in Ukraine to “depart immediately,” citing the threat of Russian missile attacks, and also warned against entering the country. The security alert was posted on the embassy’s website on July 14, a day that saw Moscow step up its rocket attacks on various locations throughout Ukraine. In the most lethal, Russian forces launched missiles from a submarine in the Black Sea that killed 22 people in the central city of Vinnytsia.