President Obama warned the leaders that they need to improve the political system and stop systematic persecution of the Muslim minority.
Talks on the trade deal reached an impasse in July when India said it would veto it unless a dispute over its food security program was resolved.
The blasts were said to be a backlash against the two countries for their role in a regional proxy war, and officials said no one was injured.
As the rate of new infections has slowed, American and Liberian officials are debating whether to shift money that was planned for the centers into other programs to combat future outbreaks.
President Obama’s top military adviser said he would consider deploying a limited number of American forces to fight alongside Iraqi troops moving to retake areas held by militants.