Russia's war on Ukraine frighteningly raises the possibility of the use of nuclear weapons, the unleashing of radioactive material from nuclear power plants and a new push to develop or acquire nuclear weapons, including by terrorists, said members of the Pontifical Academy of Sciences.

VATICAN CITY -- Ted Quewezance came to the Vatican looking for closure.

VATICAN CITY -- A Vatican office led by a cardinal or archbishop has no more authority than one led by a layperson because all offices of the Roman Curia act in the name of the pope, said experts presenting Pope Francis' new constitution on the Curia's organization.

VATICAN CITY -- Pope Francis said his heart was "broken" by the war in Ukraine, and he pleaded again, "Silence the weapons!"

VATICAN CITY -- As Russia continued its assault on Ukraine and Russian troops pressed toward the capital, Kyiv, Pope Francis left the Vatican Feb. 25 to pay a visit to the Russian ambassador to the Holy See.

VATICAN CITY -- Saying he wanted to promote a “healthy decentralization” of some aspects of Church life, Pope Francis made several changes to Church law, granting greater authority to individual bishops, bishops’ conferences and synods of bishops of the Eastern Catholic churches.