Biden approved airstrikes on Iranian-backed Iraqi militia fighters in Syria in retaliation for a rocket attack on American troops in Iraqi Kurdistan.
"Congress must be fully briefed on this matter expeditiously," Kaine said after the Biden administration's first military action since taking office.
Iranian President Hassan Rouhani promised Soleimani's family that Americans will "feel the impact" of their "criminal act... for years ahead," the BBC reported.
Over 100 Marines have been deployed Tuesday to the American embassy in Iraq as reinforcements after Iranian-backed protesters attempted to storm the compound.
A State Department spokesperson said U.S. Ambassador to Iraq Matt Tueller had been on "previously scheduled travel for a week" and claimed reports of his evacuation were false.
The plans are separated into two categories and involve airstrikes, targeted incursions and setting U.S. forces up for a ground invasion.
The modified Hellfire missile has reportedly been used in Libya, Syria, Iraq, Yemen and Somalia.
Regime airstrikes have pounded Syria's Idlib province, with clashes reported between government and rebel ground forces.
The threats come as the potential of a direct confrontation between Israel and Iran flares once more over the conflict in Syria.
A 35-year-old Russian woman and a 4-year-old boy were allegedly killed.
A senior Israeli officer who led the raid was also killed.
Bob Woodward's "Fear: Trump in the White House" will be released on September 11.
Thousands of miles away from the World Cup in Russia, the Omaya Sports Club amputee team plays in Syria's last rebel-held province of Idlib.
"More than 10,000 displaced households (nearly 80,000 people) have been assisted with food, emergency kits and other life-saving support."
"We have made up our minds. There will be no retreat from the principles of the revolution or surrender of a single inch of the Syrian south."
"He is no longer immune. His regime is no longer immune," the Israeli leader said.
Amnesty International suggested the Pentagon's report lacked credibility.
At least 25 mortar shells were fired at southern Israeli communities but with no reported injuries.
Local officials said jets continued flying over the site after the attack, keeping rescuers from reaching the victims.
Foreign Minister Sergei Lavrov said Moscow warned the Americans of its "red lines."
The U.S. gained an ally in Baghdad after overthrowing Saddam Hussein in 2003, but an alliance of Iran, Iraq, Russia and Syria is growing stronger.