The poem, entitled “What must be said,” will be published on Wednesday in the New York Times, the Deutsche Zeitung, and La Republica. In the poem, Grass writes that Iranian President Mahmoud Ahmadinejad has a “big mouth,” and that the intentions of the Iranian nuclear program are not proven.

Grass also claims that “Israel’s nuclear potential has been stealthily growing for years,” without being under any kind of international supervision. Grass believes that Israel is planning to arm submarines recently purchased from Germany with nuclear warheads.

“Germany could be responsible for a crime that can be foreseen,” Grass said.