►Iran on Sunday announced the arrest of 20 people [1] for links to the assassinations of Iranian nuclear scientists. At least five nuclear experts have been killed since 2010, according to the Associated Press. Iran suspects Israel is behind the killings. Iran’s intelligence minister said “the suspects moved between Iran and Israel through a neighboring country. He did not name the country, but Iran has accused Azerbaijan of harboring terrorists linked to Israel,” the AP reported.

►A new report by the data security company Imperva explains methods hackers and others used to bypass CAPTCHAs [2] on Web sites and the emerging technology to try and stop them.

►The Taliban in Pakistan has delivered an ultimatum to the United States [3] to end drone strikes or it will ban polio vaccines for children. Pakistan is one of the last three countries where polio is still a problem. "Almost every resident of North Waziristan has become a mental patient because of the drone strikes, which are worse than polio," a Taliban commander said in a statement. “Polio drops will be banned in North Waziristan until the drones strikes are stopped,” he said.

►In other news, Mohamed Morsi of the Islamist group The Muslim Brotherhood [4] is declared the winner of Egypt’s “first competitive presidential race.” ♦ Rodney King, the victim of a police brutality case that prompted the LA riots in 1992 [5], was found dead Sunday morning. ♦ And Russia is deploying Marines to Syria [6] to protect Russian citizens on a navy base it has there.