Political views
Giammattei vowed to bring back the death penalty and pledged to "crush violent gangs, fight poverty to stop migration and end 'disgusting' corruption." He is against same-sex marriage and abortion and supports using the military for civilian security.
During his visit to Israel in December 2019, he pledged to have Lebanese Hezbollah declared a "terrorist organization," declaring that "the friends of Israel are the friends of Guatemala, and the enemies of Israel are our enemies." A month earlier he had also pledged to align Guatemala's policy of Israeli settlements to that of the United States.
In 2019, he called the Venezuelan government a "dictatorship" and said he wanted to maintain the same diplomatic line as his predecessor, Jimmy Morales, towards Venezuela, a country with which Guatemala has severed diplomatic relations.
During the 2022 Russian invasion of Ukraine, he became the first Latin American leader to visit Ukraine since 24 February, as well as in the last 12 years. Visiting towns such as Bucha, he called on the world community to "not observe passively."
In November 2023, he expressed his unconditional support for Israel during the Gaza war.