Actors Ryan Reynolds and Blake Lively have pledged to match up to $1 million in aid to displaced Ukrainians, Reynolds tweeted Saturday.
As of Sunday, about 368,000 Ukrainian refugees had arrived in neighboring countries, according to the U.N. High Commissioner for Refugees.
The number was rising, according to the refugees office.
Reynolds and Lively tweeted their promise to match donations made to USA for United Nations High Commissioner for Refugees.
"In 48 hours, countless Ukrainians were forced to flee their homes to neighboring countries. They need protection. When you donate, we’ll match it up to $1,000,000, creating double the support," Reynolds said in a retweet of the USA for UNHCR account.
Lively shared a similar message on Instagram.
"@usaforunhcr is providing life saving aid, and also working with neighboring countries to ensure protection for these families," Lively wrote, sharing a picture of what appeared to be an infant refugee from Ukraine.
The stars made the pledge on the fourth day of Russia's invasion of Ukraine.
Fighting continued across the country Sunday as Ukraine's stiffer-than-expected resistance appeared to be stymieing the Russian assault, a U.S. defense official said.
Blasts and air raid sirens were heard in the area around Kyiv as Russian troops moved into the center of Kharkiv, Ukraine’s second-city, local officials said.