The statements stated that Israel would not provide consular services and urged citizens to cooperate with security forces in the countries in which they reside if they are subjected to any hostile acts.
The statements did not specify a timeframe for the continued closure of the embassies. A person answering the phone at the embassy in Berlin did not provide any further details.
"In light of the latest developments, Israeli missions around the world will be closed and consular services will not be provided," the statement said.
German Chancellor Friedrich Merz, who spoke with Israeli Prime Minister Benjamin Netanyahu on Friday, said that Germany has strengthened measures to protect Jewish and Israeli sites.
A Reuters witness said security was increased around Stockholm's Great Synagogue, with a police truck and two cars parked near the building.
Earlier, Israel said it had attacked nuclear facilities and missile factories in Iran, killing military leaders in an operation that could last for some time, to prevent Tehran from developing a nuclear weapon.
US President Donald Trump indicated that Iran had opened itself up to attack by resisting US demands in talks to limit its nuclear program, and urged it to strike a deal "because the next attacks already planned will be even more vicious."
