If the rebels take Jarablus, it would preclude an assault by Kurdish forces who hope to expand their reach.
South Korea says a launch on Wednesday was the latest move by Kim Jong Un in defiance of U.N. Security Council resolutions.
Vladimir Putin's spokesman brushed off speculation Russia has plans in place to attack.
The U.S. and South Korea are already in talks about a missile defence deployment.
It "is liable to severely destabilize the commercial equilibrium of Paris," the mayor said.
Iraqi leader Haider al-Abadi calls on militant group "to flee" as assault on stronghold begins.
Putin is trying to revive Russia's space program, which is beset by problems after years of post-Soviet neglect.
The congress comes amid concerns surrounding the country's nuclear program.
A new movement formed by the former Greek Finance Minister seeks to bring power back to Europe's people.
A signal from NASA's Dawn confirming the first-ever successful entry into orbit of a dwarf planet came back at 8:36 a.m. on Friday.
Despite its initial failure, Elon Musk is optimistic about improving future SpaceX mission landings.
Mars One wants to send volunteers on a one-way trip to the red planet, and make a TV show out of it
NASA's test flight launched early Friday morning and successfully splashed back down in the Pacific hours later.