The U.S. Embassy in Russia has warned Americans to consider leaving the country promptly amid the Ukraine invasion. On Sunday, the embassy issued a security alert on its website to inform U.S. nationals of the limited number flights arriving to and departing from Russia. "An increasing number of airlines are canceling flights into and out of Russia, and numerous countries have closed their airspace to Russian airlines," the embassy said in the advisory. "U.S. citizens should consider departing Russia immediately via commercial options still available." "The U.S. Embassy reminds U.S. citizens that the Department of State's Travel Advisory level for Russia is at 'Level 4: Do Not Travel,'" the statement added. Further explanation on the level 4 travel advisory stated, "Do not travel to Russia due to ongoing tension along the border with Ukraine, the potential for harassment against U.S. citizens, the embassy's limited ability to assist U.S. citizens in Russia, COVID-19 and related entry restrictions, terrorism, harassment by Russian government security officials and the arbitrary enforcement of local law." (https://www.yahoo.com/entertainment/u-embassy-warns-americans-russia-232925341.html) The embassy also provided suggestions for U.S. nationals based in Russia amid the ongoing crisis, including staying alert in locations frequented by tourists and Westerners, notifying friends and family of your safety and carrying proper identification.