Describing the resurgence of Taliban and Al-Qaeda as real challenge, India on Wednesday asked the international community to put effective pressure on Pakistan to implement its commitment to deal with terror groups on its soil. Delivering a keynote address at a conference on South Asia-2020 in New Delhi, Foreign Secretary Nirupama Rao said, there is a growing consensus that the increase in terror activities in Afghanistan is linked to the support available in the contiguous areas. She said, terrorism remains essential challenge to the regional security. Mrs Rao also rubbished Pakistan's claim of seizing India-made arms from the Taliban stronghold of South Waziristan, saying there is no factual basis for these reports.