This news of a 'solidarity' comes as Gulf countries gather in Saudi Arabia for GCC Summit talks.
All six GCC delegations have arrived at Saudi Arabia's al-Ula to commence the 41st summit, which will mark the end of the three-year long Gulf crisis.
It comes after borders between Qatar and Saudi Arabia were reopened.
Sheikh Tamim bin Hamad Al-Thani has landed in the Saudi city of Al-Ula to participate in the GCC summit.
Turkey on welcomed the announcement that Saudi Arabia will reopen its borders and airspace to Qatar, but called for all sanctions on its ally Doha to be lifted.
Saudi Arabia will reopen its borders and airspace to Qatar, the Kuwaiti foreign minister said, more than three years after Riyadh sealed both and led an alliance to isolate Doha.
On Twitter, the spokesman for US forces in Afghanistan blamed the Taliban directly for a "campaign of unclaimed attacks and targeted killing", saying they must "cease for peace to succeed".
Oman's Deputy Prime Minister Fahd bin Mahmoud Al-Said and Bahrain's Crown Prince Salman bin Hamad Al Khalifa will represent their countries at the GCC Summit in Saudi Arabia on Tuesday.
A statement by the Gulf Cooperation Council confirmed that all leaders of member states will attend the annual summit in Saudi Arabia's northwest Al-Ula province on Tuesday.
As a wave of targeted killings grips Afghanistan, government negotiators will meet with Taliban representatives to resume talks in Doha, after Washington broke months of deadlock between the two sides.