President Donald Trump will use fast-growing supplies of U.S. natural gas as a political tool when he meets in Warsaw on Thursday with leaders of a dozen countries that are captive to Russia for their energy needs.

In recent years, Moscow has cut off gas shipments during pricing disputes with neighboring countries in winter months. Exports from the United States would help reduce their dependence on Russia.

Trump will tell the group that Washington wants to help allies by making it as easy as possible for U.S. companies to ship more liquefied natural gas (LNG) to Central and Eastern Europe, the White House said.