Unofficial talks to establish diplomatic ties could resume at any time.
The militant wing of Hezb-i-Islami said Thursday that it would continue unofficial talks.
But the practice of holding unofficial talks was defended by other countries.
"In unofficial talks they have agreed to do this and the new government will have a majority of 180 seats," the source said.
A more realistic opening goal would be to negotiate a freeze in missile and nuclear tests, said Suzanne DiMaggio, a director and senior fellow at the New America research group who has been involved in unofficial talks with North Korea.
But now that the North Koreans have sent such a signal, through unofficial talks last week with Gov. Bill Richardson of New Mexico, administration officials must decide whether to open direct negotiations with North Korea or dismiss Mr. Richardson's efforts.
In a meeting with reporters, Mr. Kuchma's top aide, Viktor Medvedchuk, conceded that the question of selling the radars to Iraq had been broached in "unofficial talks" by the head of the government's arms-export agency.
Multiple people involved in unofficial talks with North Korea say the Trump administration has been making overtures toward the Kim regime, including efforts to set up a secret back channel to the North Korean leader using "an associate of Trump's" rather than the usual lineup of North Korea experts and former officials who talk to Pyongyang's representatives.
Jean-Marie Le Pen, Marine's father and an admirer of authoritarianism and ultra-nationalism, told the BBC in an interview recorded before last month that his daughter had previously met the Russian president, and her former foreign affairs adviser Aymeric Chauprade said in 2014 unofficial talks had taken place.
Sneijder was linked with a switch to Manchester United in 2011, with the player claiming "unofficial talks".
But both the US government and the experts who have been involved in the dialogue denied unofficial talks have been cut off.
