KABUL - Pakistan's national security advisor, Sartaj Aziz, is expected to visit Afghanistan amid strained relations between Kabul and Islamabad.

Besides attending the Regional Economic Cooperation Conference on Afghanistan (RECCA) summit which will start on Thursday, the Pakistani diplomat is said to help improve the relations between the two neighboring countries, Pakistani media outlets said Wednesday.

The relations were soured following a spate of attacks in Kabul which the Afghan intelligence sources blamed on Pakistan.

Meanwhile, officials at the Afghan Presidential Palace said Afghanistan has delivered solid evidence to the Pakistani government that clearly proved bases of insurgent networks in that country.

According to Afghan officials, the fundamental cause of tension with Islamabad is the existence of insurgent groups, especially Haqqani Network in Pakistan.

"The remarks of Mr. Aziz are same as the past remarks of Pakistani officials that they had over the past decade," President Ashraf Ghani's deputy spokesman Sayed Zafar Hashemi said, after Aziz stated the Haqqani bases were eliminated in Pakistan.

Recently, the U.S National security Advisor, Susan Elizabeth Rice, in her visit to Islamabad called on Pakistan to stop terrorist networks from carrying out attacks on Afghanistan from within their borders.

Meanwhile, the analysts stress the need for trilateral efforts by United States, Pakistan and Afghanistan to eradicate terrorism in the region.

This comes after Washington recently cut its $1 billion USD aid program to Islamabad on the back of their decision that Pakistan was not working at doing enough towards counter-terrorism operation in north Waziristan in a bid to squash Haqqani.

In addition, the U.S. also blacklisted a senior member of Haqqani Network, Aziz Haqqani, and declared him as a foreign terrorist. (Tolonews)