"Such acts of violence aimed at undermining the friendship between India and Afghanistan will not weaken our resolve to assist the friendly people and Government of Afghanistan in building a strong, stable and democratic Afghanistan," he said.
Expressing a sense of relief that all Indian citizens are safe in the aftermath of the attack in Herat city, Ansari said the attack "is to be condemned in strongest possible terms."
There were nine Indians in the mission apart from local Afghans at the time of attack.
All the four attackers have been neutralised.