Presumptive U.S. Democratic presidential nominee Joe Biden said Thursday he will strive for a world without nuclear weapons, criticizing Republican President Donald Trump for undermining past efforts to curb the dangers of such arsenals.

"I will work to bring us closer to a world without nuclear weapons, so that the horrors of Hiroshima and Nagasaki are never repeated," Biden said in a statement, touching on a long-term goal set by former President Barack Obama when Biden served as vice president.

The statement was released on the 75th anniversary of the U.S. atomic bombing of Hiroshima in 1945. A second atomic bomb was dropped on Nagasaki three days later and Japan surrendered six days after that, marking the end of World War II.