Thani says he will not accept Libyans killing each other over his post, he will step down in two months.
Officials' efforts saw the last polio case reported in 2000, until a 6-month-old boy contracted the virus in March.
Attacks in Iraq left 19 people dead on Tuesday while security forces said they killed 25 militants near Baghdad.
Attacks killed 10 people in Iraq while six militants also died just weeks before parliamentary elections.
Security forces killed more than 40 militants in clashes in a town southwest of Baghdad.
The bombs exploded Wednesday killing at least two people, a civilian and a senior police officer.
Iraqi authorities say gunmen killed seven soldiers during an attack at a security checkpoint near a northern city.
Egyptian army chief Abdel Fattah al-Sisi said he had quit the military to run for president.
Syrian govt forces intensify their shelling of positions seized by rebels in Latakia province near Syria-Turkey border.
NYT report claims Al Qaeda is seeking to establish a base in Syria to carry out strikes against US and Europe.
The convictions were carried out for the killing of a police officer, attempted killings and other acts of violence.
Israeli Defence Minister Moshe Yaalon said in a statement that the Syrian army had aided and abetted Tuesday's attack.
Approved by Obama, the operation was conducted just after 0200 GMT Monday “in international waters southeast of Cyprus”.
In a crackdown on publications deemed threatening to the kingdom the Saudi authorities have banned hundreds of books.
At least 11 people have been killed in three days of clashes in Tripoli linked to the conflict in Syria.