DUBLIN, Ireland -- Ireland will legalize civil partnerships for gay couples, Prime Minister Bertie Ahern pledged Monday as he opened new offices for the country's main gay rights group. Civil partnerships allow gay couples the same rights to inheritance, state benefits and other financial rights as held by married heterosexual couples. "Sexual orientation cannot, and must not, be the basis of a second-class citizenship. Our laws have changed, and will continue to change, to reflect this principle," Ahern told an audience at Ireland's Gay and Lesbian Equality Network.