WATCH: ‘Still time and space for diplomacy’ with Russia on Ukraine, says Defense Secretary Austin

Secretary of Defense Lloyd Austin said during a news briefing Friday that there was still “time and space for diplomacy” with Russia over Ukraine.

Watch Austin in the player above.

Austin said Friday the buildup of Russian forces along Ukraine’s border has reached the point where President Vladimir Putin now has a complete range of military options, including actions short of a full-scale invasion.

“While we don’t believe that President Putin has made a final decision to use these forces against Ukraine, he clearly now has the capability,” Austin told a Pentagon news conference.

Austin said Putin could use any portion of his force of an estimated 100,000 troops to seize Ukrainian cities and “significant territories” or to launch “coercive acts or provocative political acts” like the recognition of breakaway territories inside Ukraine. He urged Putin to de-escalate the tensions.

Austin spoke alongside Army Gen. Mark Milley, chairman of the Joint Chiefs of Staff, who said Russian forces near Ukraine include not only ground troops and naval and air forces but also cyber and electronic warfare capabilities, as well as special operations forces. He urged Putin to choose a diplomatic path over conflict.

“If Russia chooses to invade Ukraine, it will not be cost free, in terms of casualties and other significant effects,” Milley said.

Earlier Friday, the Kremlin said Putin told French President Emmanuel Macron that the West has failed to consider Russia’s key conditions of halting further NATO expansion, stopping the deployment of alliance weapons near Russian borders, and rolling back its forces from Eastern Europe.

The U.S. and NATO formally rejected those demands this week, although Washington outlined areas where discussions are possible, offering hope that there could be a way to avoid war amid the troop buildup near Ukraine.

Despite that, U.S. President Joe Biden on Thursday warned Ukrainian President Volodymyr Zelenskyy that there is a “distinct possibility” that Russia could take military action against the former Soviet state in February. Russia has repeatedly denied having any such plans.