U.S. President Donald Trump and Russian President Vladimir Putin agreed to an immediate halt to strikes on energy and infrastructure targets in Ukraine during a lengthy call on Tuesday. However, Putin did not commit to a broader 30-day ceasefire that the U.S. has been advocating for.

The White House called the agreement a “first step” toward peace, expressing hope that it would lead to a maritime ceasefire in the Black Sea and a full resolution of the conflict. Negotiations on these measures are set to begin immediately in the Middle East, according to U.S. officials.

Shortly after the Trump-Putin conversation, air raid sirens blared in Kyiv, followed by explosions, prompting local authorities to urge residents to seek shelter. It remains unclear whether Ukraine supports the limited ceasefire proposal.

Ukrainian officials had previously pushed for a broader ceasefire, covering the Black Sea and long-range missile strikes, as well as a prisoner exchange, during a meeting with U.S. representatives in Saudi Arabia earlier this month.

Trump confirmed the agreement on social media, writing: “We agreed to an immediate Ceasefire on all Energy and Infrastructure, with an understanding that we will be working quickly to have a Complete Ceasefire and, ultimately, an END to this very horrible War between Russia and Ukraine.”