WASHINGTON (AP) — The United States and Russia inched closer Tuesday to a deal to extend their last remaining arms control pact, after U.S. threats to allow the deal to expire early next year.

The two sides signaled they are ready to accept compromises to salvage the New START treaty just two weeks ahead of the U.S. presidential election in which President Donald Trump faces a strong challenge from former Vice President Joe Biden, whose campaign has accused Trump of being soft on Russia.

After the White House last week rejected a proposal from the Kremlin to keep the accord alive, calling it a...