Islamabad, Oct. 15 -- US President Donald Trump has called for an immediate halt to Turkey's strikes against Kurds in Syria and imposed new sanctions on the NATO ally. Vice President Mike Pence is set to lead a mediation effort between the two countries.

Washington is "simply not going to tolerate Turkey's invasion of Syria any longer," US Vice President Mike Pence told reporters on Monday. Pence said President Donald Trump had discussed the offensive in a phone call with his Turkish colleague Recep Tayyip Erdogan.

Pence said Trump wanted Turkey to stop the invasion, implement an immediate ceasefire and to begin to negotiate with Kurdish forces to end the violence in Syria.

"The United States of America did not give a green light for T...