LONDON: UK Prime Minister Keir Starmer has a “legal duty to act to prevent a genocide” in Gaza, Swedish activist Greta Thunberg told The Guardian.

Thunberg, who is traveling to the Palestinian enclave as part of an international flotilla, was speaking ahead of a visit by Israeli President Isaac Herzog to London on Wednesday.

She said the world is “waking up” to the “livestream genocide” in Gaza, adding: “The words we will use to describe people who are standing on the wrong side of history, supporting or committing war crimes, those words do not exist yet, those slurs do not exist yet, but we will be using them towards people like (Starmer).”

She continued: “We have seen civilians all over the world stepping up but there is a huge absence of those whose legal responsibility it is to step up.

“These governments, these people in power, have a legal duty to act to prevent a genocide and to not support an apartheid regime.”