Russian missile and drone attacks on Ukraine overnight Saturday killed at least four people and wounded 20, officials said, and prompted fresh calls from Ukraine’s president for additional Western air defense systems to be installed.

In the capital kyiv, two people were killed and 13 wounded in a ballistic missile attack in the early hours of Saturday, kyiv police said.

A fire broke out in a non-residential building at one location, while debris from intercepted missiles fell in an open area at another site, damaging windows in nearby buildings, Ukraine’s State Emergency Service wrote on the Telegram messaging app.

“Explosions in the capital. The city is under ballistic attack,” Mayor Vitali Klitschko wrote on Telegram during the attack.

In the Dnipropetrovsk region, two people were killed and seven wounded, acting regional governor Vladyslav Haivanenko said, adding that apartment buildings and private homes were damaged in the attacks.

Ukraine’s air force said Russia launched nine missiles and 62 drones, of which four missiles and 50 drones were intercepted.

In Russia, the Defense Ministry said its air defenses shot down 121 Ukrainian drones over Russia overnight.

Ukrainian President Volodymyr Zelenskyy said Saturday that such attacks underlie his country’s need for additional Patriot defense systems from the United States.

“It is precisely because of these attacks that we pay special attention to Patriot systems, in order to protect our cities from this horror. It is essential that partners who possess the relevant capabilities implement what we have discussed in recent days,” he wrote in English on X.

“The United States, Europe and the G7 countries can help ensure that these types of attacks no longer threaten lives,” he said.

Ukraine has received at least seven Patriot systems since Russia’s full-scale invasion began, according to American and European defense sources, and Zelenskyy hopes to buy 25 more from the United States to strengthen its air defenses, particularly in cities.

Zelenskyy on Friday urged the United States to hit the entire Russian energy industry with sanctions and not just the two oil companies he targeted this week. He also reiterated his call for long-range missiles to be used to counterattack Russia.

Zelenskyy was in London for talks with two dozen European leaders who have pledged military aid to protect their country from future Russian aggression if a ceasefire stops the more than three-year war.

The meeting hosted by British Prime Minister Keir Starmer was aimed at increasing pressure on Russian President Vladimir Putin, adding momentum to recent measures that have included a new round of new sanctions imposed by both the United States and European countries on Russia’s vital revenue from oil and gas exports.

The talks also touched on ways to help protect Ukraine’s power grid from Russia’s near-daily drone and missile attacks as winter approaches, improve Ukrainian air defenses and supply kyiv with longer-range missiles that can strike deep inside Russia. Zelenskyy has urged the United States to send Tomahawk missiles, an idea that US President Donald Trump has considered but has not accepted so far.

Kirill Dmitriev, Putin’s envoy for investment and economic cooperation, said Friday that he believes Russia, the United States and Ukraine were “quite close to a diplomatic solution” to end the three-year war.

Speaking to CNN after arriving in Washington for talks with US officials, Dmitriev said a planned summit in Budapest between Trump and Putin had not been canceled but would likely occur later.

Trump said Tuesday that his plan for a quick meeting with Putin was on hold because he didn’t want it to be a “waste of time.”

Russian Foreign Minister Sergey Lavrov made clear in public comments Tuesday that Russia opposes an immediate ceasefire.

A White House official confirmed Friday that Dmitriev, who announced his visit on X-Day, will meet with US envoy Steve Witkoff. The official spoke on condition of anonymity because the person was not authorized to publicly discuss the private meeting.