Iran executed three men on Thursday who were accused of killing police officers during protests in January, with activists warning of the risk of a new surge in hangings as war rages with Israel and the United States.They were the first hangings Iran has carried out related to the nationwide demonstrations that were met with a brutal crackdown by the authorities.Two sources confirmed to CBS News that Saleh Mohammadi, a young member of Iran's national wrestling team, was among the three men executed in Iran. Rights groups said the trio were executed without a fair trial and had given confessions under torture.Mohammadi, Mehdi Ghasemi, and Saeed Davoudi were hanged in the city of Qom, south of Tehran, after being convicted of the capital crime of waging war against God, known as moharebeh under Iran's sharia, the judiciary's Mizan news agency said.They had been found guilty of involvement in the killing of two police officers and carrying out "operational actions" in favor of Israel and the United States."This…