Germany on Wednesday criticized U.S. President Donald Trump for halting funding to the World Health Organization (WHO) in the middle of the worst pandemic in decades.

Foreign Minister Heiko Maas said on Twitter that the accusations against the WHO were “not helpful” at a time the world needed closer international cooperation to combat the novel coronavirus.

“The virus knows no borders. We have to closely work together against #COVID19,” he stressed, and called for steps to further strengthen the UN and the WHO.

Germany’s top diplomat said the WHO has already been suffering from underfunding, and suggested that one

Read more: Germany criticizes Trump for halting WHO funds