Fresh clashes in South Sudan risk the country into plunging back to civil war. The heavy fighting involves use of tanks and helicopters between troops loyal to the president Kiir and those backing vice president Machar.
Fresh clashes come on a few months after the former rebel leader became vice president under a deal that ended two years of civil war.
Since the fight broke four days ago, hundreds of people have been killed in the capital Juba.
U.S. and India have started to evacuate their citizens.
The fighting between the warring forces intensified on Monday with helicopters overhead seen firing in the direction of vice president’s headquarters. Residents have reported tanks on the street.
The U.N. Security Council on Sunday demanded Kiir and Machar rein in their forces and end the clashes.
The objective of the fresh clashes has not been ascertained but the escalating violence has raised fears of possible return of civil war similar to the one that erupted in late 2013 and that ran along ethnic lines, pitting Kiir, an ethnic Dinka, against Machar, a Nuer.
UN has blamed the two leaders of failing their people calling them to contain their troops and end the violence.