US President Donald Trump has said he believes Barack Obama is behind the protests against Republican lawmakers, and national security leaks.
He told Fox News: "I think President Obama's behind it because his people are certainly behind it", but added: "I also think it's just politics".
Mr Trump offered no evidence for his claims; his predecessor in the White House has not commented.
Mr Trump also spoke about his budget plans and other issues.
In his wide-ranging interview with Fox News and Friends, he said:
He gave himself a "C" on getting his message out but an "A" for achievement and "A+" for effort
His plans to boost defence spending by $54bn (£43bn) would be paid for by a "revved up economy"
He would be a "hypocrite" if he attended the White House Correspondents' Dinner in light of "fake news"
President Trump's interview was broadcast hours before he is due to give his first address to a joint session of Congress in which he is expected to set out in greater detail his plans to cut spending and boost the economy.
He was asked about the protests faced by some Republican politicians at town hall meetings across the country and not, as our earlier story said, protests about his travel ban on several Muslim-majority countries.
He said he was certain Obama loyalists were behind both those protests and White House leaks. "In terms of him being behind things, that's politics. And it will probably continue," he added.
He was asked for more detail on how he would find the money for the 10% increase in military spending he has proposed for 2018. Proposed cuts elsewhere are unlikely to cover the proposed increase.
Mr Trump said he would get "more product for our buck" in terms of buying military hardware and would ask for a "form of reimbursement" from countries making use of the US military.
But he said his overall aim was to grow the economy.
"We were probably GDP of little more than 1% and if I can get that up to three or maybe more, we have a whole different ball game," he told the programme.
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