NATO Secretary General Mark Rutte is set to meet President Donald Trump this week on the heels of the U.S. leader announcing plans to sell NATO allies weaponry that it can then pass on to Ukraine.

In a statement, NATO said NATO Secretary General Mark Rutte will be in Washington on Monday and Tuesday and meet with President Trump and key administration officials.

President Donald Trump said the United States will be sending Ukraine’s armed forces additional Patriot air defense missiles and more “very sophisticated” military equipment, as he expressed frustration at Russian president Vladimir Putin’s conduct in his country’s three-year-old war against Ukraine.