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US President Barack Obama and his French counterpart Francois Hollande have discussed efforts to deepen bilateral cooperation on counter-terrorism. They were speaking on the sidelines of the nuclear summit in Washington.

"In the wake of the Brussels attack, with our memories of the tragedy in Paris, we have not only great urgency around the nuclear issue but eliminating generally the scourge of terrorism. And we are continuing to deepen the partnership with France around counter-terrorism efforts. We've made some significant strides around information sharing. President Hollande has been a leader in helping to galvanize the European community around the necessity to be more effective in transatlantic exchanges of information and rooting out foreign fighters, identifying potential attacks, cutting off financing, and so this has been a very useful exchange in terms of examining the progress that has been made by our teams and where we still have to push a little bit harder," Obama said.

"We worked on further coordinating commitments when it comes to fighting against terrorists. We are also making sure that between Europe and the United States, there will be a very high level of coordination," Hollande said.