Ukrainian Foreign Minister Dmytro Kuleba said on Tuesday that Russia will soon have over 120,000 troops on Ukraine’s border, calling for new Western economic sanctions on Moscow.

NATO, Kyiv and Washington have been alarmed by the massive build-up of Russian forces near Ukraine and in Crimea, the peninsula that Russia annexed from Ukraine in 2014.

The concentration of troops is now larger than during that annexation, according to western officials.

“Russian troops continue to arrive in close proximity to our borders in the northeast, in the east and in the south. In about a week, they are expected to reach a combined force of over 120,000 troops,” Kuleba told an online news conference.

“This does not mean they will stop building up their forces at that number,” the foreign minister said, warning of what he said was Russia’s unpredictability although he said Kyiv did not want conflict with Moscow.

Josep Borrell, the European Union’s top diplomat, said on Monday that Moscow had concentrated over 150,000 troops on Ukraine’s border and in Crimea.

Kuleba also called for Russia to re-commit to a ceasefire in eastern Ukraine, where Moscow has backed separatist forces in a conflict that started in 2014.

Moscow has said the build-up is a 3-week snap military drill to test combat readiness in response to what it calls threatening behavior from NATO. The exercise is due to wrap up within a two-week period, Russia said.

Kuleba attended a video conference with EU foreign ministers and said he openly “called on colleagues to start considering a new round of sectoral sanctions against Russia”.

He noted that he did not feel EU ministers were braced for such a move but he told them that individual sanctions on Russian officials were insufficient.