He detailed that support to lawmakers during a Senate Intelligence Committee hearing on worldwide threats.
He described a scenario where what happened to Sony could be "done in sequence over multiple firms - I mean, that's a foreign government attacking a North American firm to coerce its behavior".
"This aggressiveness was evident in Russia's efforts to influence the 2016 USA election and we assess that only Russia's senior-most officials could have authorized the 2016 USA election-focused data thefts and disclosures, based on the scope and sensitivity of the targets", Coats wrote in his statement.
In an overview, Coats told the panel: "We assess that Russian Federation is likely to be more aggressive in foreign global affairs, more unpredictable in its approach to the United States, and more authoritarian in its approach to domestic policies and politics". The Islamic State will retain the ability to sustain its insurgency and carry out terrorist attacks globally even as it loses ground in Syria and Iraq.
Coats said the situation will deteriorate, and the Taliban will make gains, especially in rural areas.
In Cuba, which is preparing for a historic transition to an era without a Castro in power at the beginning of next year, the government will focus on maintaining political control while managing a recession, Coats told the panel.
President Donald Trump is now weighing an increase of 3,000 to 5,000 U.S. troops in Afghanistan in an effort to stabilize the fight against the Taliban and terror groups there.
Testifying beside Coats, the head of the military's Defense Intelligence Agency, Vincent Stewart, said the state of the 15-year conflict will deteriorate from a stalemate in favor of the belligerents if left unchecked.
Calling the DPRK "an increasingly grave national security threat" to the United States, Coats said the DPRK had taken "initial steps" toward fielding a mobile intercontinental ballistic missile.
"Iran provides arms, financing, and training, and manages as many as 10,000 Iraqi, Afghan, and Pakistani Shia fighters in Syria to support the Assad regime", Coats said.
The threat of homegrown extremists is the greatest terrorism threat facing the United States, the nation's top spy said Thursday. "So, they're going to put those two together at some point, but we haven't seen them do that tested end-to-end", Stewart said.
Stewart later said that Iran sees itself as the "dominant regional power", a position that might later put it in conflict with Russian Federation if their interest diverge from supporting Assad.
Dan Coats tells the Senate intelligence committee that the deal extended the amount of time Iran would need to produce enough material for a nuclear weapon.