The State Department has signaled its approval for a potential $2.4 billion sale of anti-ship missiles to Taiwan, a move certain to anger Beijing and raise tensions further between the U.S. and China days before the American election.

The Trump administration said in a statement Monday that it has notified Congress that it backs the proposed sale of as many as 100 Harpoon Coastal Defense Systems built by Boeing Co., which include 400 land-based missiles.

The new Harpoon anti-ship missiles are intended to be launched from ground-mobile launchers, adding to Taiwan’s arsenal of air and submarine-launched Harpoons from earlier sales.