US President Barack Obama said Monday an interim agreement between world powers and Iran provides the "time and space" for the sides to reach a broader deal on Tehran's nuclear programme, dpa reported.
"It's going to be difficult, it's going to be challenging, but ultimately this is how diplomacy should work," Obama said after details of a short-term agreement were ironed out over the weekend.
Obama called on Congress to allow the diplomatic process to play out and not to implement further sanctions on Iran as lawmakers have threatened to do.
"What we want to do is give diplomacy a chance, and give peace a chance," he said following talks at the White House with Spain's Mariano Rajoy.