At a joint press conference following talks with Polish President Andrzej Duda at the White House, Trump said the two men had “reaffirmed the vital alliance” between their countries.
Trump told reporters: “We will probably be moving them (US troops) from Germany to Poland."
He added: “We are going to be reducing our forces in Germany. Some will be coming home and some will be going to other places. But Poland would be one of those other places, other places in Europe.”
He did not give details but added: "I think it sends a very strong signal to Russia."
Trump accused Germany of “delinquency” in not spending enough on defence. Earlier this month he said the United States would cut its forces in that country by 9,500, to 25,000.
Amid fears of Russian aggression, the authorities in Warsaw have been making efforts to secure boosted US troop numbers in Poland, which lies on the eastern flank of NATO.
Trump told the press on Wednesday: “In our meeting today, President Duda and I reaffirmed the vital alliance between our nations. Last year we signed two joint declarations to increase our security collaboration, and we look forward to signing a defence cooperation agreement.”
During a meeting at the White House in June last year, Duda and Trump inked a declaration under which America was to station around 1,000 extra troops in Poland. They also sealed a raft of economic agreements.
The two presidents in September signed a defence agreement to name locations for more American troops in Poland.
Following Moscow's annexation of the Crimea region of Ukraine in 2014, NATO decided at a Warsaw summit in July 2016 to deploy four rotating multinational battalions to Poland and the Baltic states.
Poland’s Duda was on Wednesday the first foreign leader to visit the White House since the start of the coronavirus epidemic.
His trip took place just days ahead of Poland’s presidential election, which is scheduled for Sunday. Duda is seeking another five years in office.
Standing next to Duda, Trump said: "I do believe he will be very successful.”
In a joint statement signed in Washington on Wednesday, the two presidents declared the United States would help Poland develop its civil nuclear power sector and 5G technology.
The two countries also pledged to work together to find therapeutics and vaccines for the COVID-19 virus amid a pandemic.
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