Saudi Arabia, the United Arab Emirates, Bahrain and Egypt severed diplomatic and commercial links with Qatar on June 5, accusing the government in Doha of supporting terrorism in an alliance with Iran. Shiekh Sabah Al Ahmed Al Sabah, the Emir of Kuwait, lobbied for relaxing the cut-off date after he received an assurance from Qatar that it would respond to the demands by Monday.
Mr Roberts believes the issues surrounding Qatar and neighbouring gulf states could continue long after the 48-hour deadline.
The four countries indicated in their statement that they would study and evaluate Qatar's response before delivering their own reply to Kuwait.
State Department spokesman Heather Nauert said that the talks will last for a week but he said that Saudi Arabia's demands are still challenging for Qatar.
"Qatar has denied any connection with the terrorist movements listed by the United Nations", added Enferaad, "and confirmed that it is an active member [of the UN] in combatting terrorism".
Qatari Foreign Minister Sheikh Mohammed bin Abdulrahman Al Thani brought a handwritten letter from Qatar's Emir Sheikh Tamim bin Hamad Al Thani and handed it over to Kuwait's Emir Sheikh Sabah Al-Ahmad Al-Jaber Al-Sabah on Monday.
It is unclear what consequences Qatar will face if it misses tomorrow's deadline.
Qatar's vast gas reserves make it one of the world's richest countries, but the ongoing crisis ferments further instability in the Middle East.
Saudi Arabia's King Salman Al-Saud will not attend the G20 summit due to the Gulf crisis, Saudi diplomatic sources said on Monday.
The call also reviewed the American position, as well as worldwide stances regarding the crisis, which call for dialogue and diplomacy in order to maintain the security and stability of the region, reported the QNA.