U.S. Secretary of State Hillary Clinton says NATO will not let Libyan leader Moammar Gadhafi's threats deter its mission in the country.

Clinton made the comments during a visit to Spain Saturday.

Libya's embattled leader threatened Friday that NATO will face consequences if the coalition does not end its campaign of airstrikes.

Mr. Gadhafi delivered the warning in an audio message aired to thousands of supporters gathered in Tripoli's main square.

The Libyan capital is at the center of Colonel Gadhafi's area of control in the war-torn country and has been the site of multiple coalition airstrikes against pro-government forces.

On Monday, the International Criminal Court issued arrest warrants for Colonel Gadhafi, his son and Libya's top intelligence chief for allegedly orchestrating the deaths of civilians during the months of protests.

Mr. Gadhafi's son, Saif al-Islam, insisted Friday that neither he nor his father ordered the killing of civilian protesters during Libya's ongoing pro-democracy rebellion against 42 years of autocratic rule.

In an interview with the Russian news channel Russia Today, posted online, the younger Gadhafi defended the actions of Libya's military, saying troops had killed people in order to defend military sites and to prevent the theft of ammunition or arms.

He also dismissed the International Criminal Court as a “joke.”