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The UAE has been accused of hacking the Qatari government in order to post false comments from Qatar's Emir, Sheikh Tamim Bin Hamad al-Thani.

Abu Dhabi has denied all accusations and has said that fresh sanctions against Doha could be forthcoming.

Qatar continues to face a land, sea and air blockade from Saudi Arabia, the UAE, Bahrain and Egypt.

Tuesday July 18

6am: Iranian Foreign Minister Mohammad Javad Zarif said that he hopes Yemen's war will not spark direct confrontation between Iran and Saudi Arabia and that they can work together to end the conflict in the country and Syria.

Mr Zarif said: "We certainly hope not ... We don't have to fight; we don't need to fight. We don't need to try to exclude each other from the scene in the Middle East."

Earlier this year Saudi Arabia, the United Arab Emirates, Bahrain and Egypt all cut off diplomatic and transport ties with Qatar on June 5, accusing it of financing Islamist militant groups and allying with Iran - allegations Qatar denies.

Monday July 17

9pm: Egypt's foreign ministry has announced the end of visa-free travel for Qataris - the latest measure taken against Doha in the Gulf crisis.

Qatari nationals will now have to apply for a visa in order to enter Egypt.

Ahmed Abu Zeid, Egypt's foreign ministry spokesman said: "It does not make sense to keep making exceptions for Qatar and giving it privileges in light of its current positions."

The restriction will not affect spouses and children of Egyptian nationals, as well as Qatari nationals who are studying at Egyptian public universities.

8pm: Fayez Sarraj, the head of Libya's UN-backed government, believes that solving the Gulf dispute will benefit the situation in Libya.

Speaking to Russia’s Sputnik, he said that ending the crisis will "positively impact the situation in Libya" as the disputing states have ties to rival factions in his country.

He underlined his hope that "this situation between the Arab brothers will be resolved, the crisis will end, and inter-Arab reconciliation will replace it again".

7.30pm: Egypt’s Foreign Minister Minister Sameh Shoukry made it clear that his country is standing by its list of demands presented to Qatar earlier this month.

Cairo will continue to put pressure on Doha and will keep its sanctions in place until the demands are met.

A Minstry spokesman said that the position comes ”in light of what the quartet states see as Qatar's stalling and procrastination, and lack of concern for the concerns of the four states".

3.30pm: Qatar has released a statement condemning the UAE for its alleged hack.

"The information published in the Washington Post ... revealed the involvement of the United Arab Emirates (UAE) and senior Emirati officials in the hacking of Qatar News Agency," its government communication office said in a statement.

The report "unequivocally proves that this hacking crime took place", it added.

2.55pm: Qatar has expressed its regret at the UAE’s alleged hacking of its state news agency, a “crime’ it says is a violation of international law.

2.00pm: The UAE, Egypt, Bahrain and Saudi Arabia are discussing additional sanctions on Qatar, the UAE’s Foreign Minister Anwar Gargash has said.

"There will be some tightening of the screws," he said, declining to give a time frame on when new measure could be introduced.

"We will see what are these screws, whether they are financial, whether they are other, but they completely within our (remit) as sovereign states."