U.S. Embassy building in Seoul / Korea Times file

Foreign embassies in Seoul, baffled by President Yoon Suk Yeol's shocking declaration of martial law late Tuesday, have been scrambling to advise their nationals to take necessary safety precautions and deal with the possible fallout from the incidents, officials said on Wednesday.

The U.S. Embassy in Seoul issued an emergency alert, advising U.S. citizens in Korea to take safety precautions after martial law was lifted early Wednesday. The alert came just a day after Yoon declared the emergency measure, which was then rescinded hours later following a National Assembly vote that rejected the declaration.

"Following President Yoon's announcement to lift the martial law declaration, the situation remains fluid," the embassy said on its website. "U.S. citizens should anticipate potential disruptions. When in public, you should pay attention to your surroundings and exercise routine safety precautions."

The embassy further urged U.S. nationals to avoid areas of demonstration and exercise caution near large crowds, protests, or rallies, noting that "peaceful demonstrations can turn confrontational and escalate into violence." In addition, the embassy canceled routine consular appointments for U.S. citizens and visa applicants on Wednesday.

The political turmoil has disrupted several international diplomatic engagements. Swedish Prime Minister Ulf Kristersson's visit to Korea, including a scheduled press conference on Thursday, has been canceled.

A spokesperson from the Swedish prime minister's office said, "We have closely followed developments during the night of Dec. 3. With recent developments, we have concluded that it is better to travel to the Republic of Korea in the future. As in all democracies, political differences are best solved through democratic processes and in accordance with the rule of law. In that spirit, the decision to lift martial law is a welcome step."

The Australian Embassy in Seoul also issued a statement, confirming its operations remained open but that in-person services were suspended.

"The situation in South Korea is evolving due to developments in domestic politics. Avoid protests and demonstrations. Sites like Gwanghwamun Square and Yeouido in Seoul may have larger crowds and more protest activity than usual. Transport and other essential services may be disrupted. Monitor the media for updates and follow the advice of local authorities," the Australian Embassy wrote in a post.

Similarly, the British Embassy expressed its support for the resolution of the crisis.

"We welcome the withdrawal of martial law following the National Assembly's unanimous vote to reject the decree. We have called for the situation to be resolved peacefully and in accordance with the constitution of South Korea," a spokesperson said.

"The U.K. and South Korea are close partners, bound by our common interests and shared values including commitment to democracy and the rule of law. The embassy continues to monitor developments closely and is in touch with Korean authorities. British nationals in Korea should continue to monitor and follow FCDO (Foreign, Commonwealth and Development Office) travel advice."

The Russian Embassy also weighed in, advising its citizens to "remain calm, follow the authorities' recommendations and avoid participating in large gatherings, especially those of a political nature."

Israeli Ambassador to Korea Rafael Harpaz emphasized Israel's commitment to democratic values, noting, "This is an internal political issue in Korea. We (will) follow closely and monitor the situation. As the only democracy in the Middle East, Israel adheres to democratic values."