The Republican vice presidential nominee said he wasn't aware of Trump's calls with Putin but doesn't see an issue with it during a rally in Detroit on Tuesday.

The presidential candidate didn't mince words about the former president during her appearance on "The Howard Stern" show on Tuesday.

Investigative journalist Bob Woodward reveals in his new book "War" what US leaders really think about other heads of state and government and each other.

Passages from legendary journalist Bob Woodward's upcoming book "War" provide a behind-the-scenes look at some of the most defining moments of Biden's presidency

Journalist Bob Woodward's upcoming book "War" alleged that Trump called Vladimir Putin "maybe as many as seven" times since leaving office.

Xi said China was "ready to join Putin to constantly expand all-round pragmatic cooperation between (our) two countries", state news agency Xinhua said.

Russian attack drones flying towards Ukraine also breached the airspace of NATO members Romania and Latvia, the countries said Sunday, triggering calls for a robust response from the military alliance.

He will also meet German Chancellor Olaf Scholz and then head to Italy, following the meeting at Ramstein Air Base, which comes days after 55 people were killed and 300 wounded in a Russian missile strike on the city of Poltava.

Moscow has stepped up its aerial attacks after Ukraine's offensive in Russia's Kursk region, which caught Russian troops by surprise.

"It's not up to us," said Andrés Manuel López Obrador when asked by press

Moscow's defence ministry said it had rushed its troops and aviation units to the border in southwestern Kursk region after a morning raid by Ukrainian units -- the latest such attack throughout the conflict.

The announcement came as Ukrainian President Volodymyr Zelensky visited special forces in the border region of Kharkiv, where Moscow's forces launched a surprise ground offensive in May but failed to make any major breakthrough.

Such missiles, which can travel between 500 and 5,500 kilometres (300-3,400 miles), were the subject of an arms control treaty signed by the US and the Soviet Union in 1987.

Moscow is Syria's most important ally, having effectively saved Assad's government through its military intervention in 2015 during a civil war.

With its castle, medieval tower and river-side beach, the western Ukrainian tourist town of Starokostiantyniv doesn't seem an obvious target for Russian missile and drone strikes.

Zelensky said on Monday that Russia "should be" represented at a second summit on the Ukraine conflict, following high-level talks last month in Switzerland that Moscow did not attend and heavily criticised.

Kicking off three days of events for the 32-nation alliance with a celebration Tuesday evening, Biden announced a new air defense system for Kyiv and urged unity against Russian President Vladimir Putin, who launched the Ukraine invasion in 2022.

Russia is a key supplier of cut-price oil and weapons to India, but its isolation from the West and growing friendship with China have impacted its time-honoured partnership with New Delhi.

When Russian paramilitary chief Yevgeny Prigozhin sent his Wagner mercenaries charging towards Moscow last year in a short-lived rebellion, President Vladimir Putin looked weak and vulnerable.

The targeted aerial barrages over recent months have crippled Ukrainian electricity generation capacity and forced officials to impose rolling blackouts and import supplies from neighbouring EU states.

Last week, the United States unveiled fresh sanctions against 300 targets in and outside Russia.

Putin is scheduled to touch down on Tuesday night for his first trip to the isolated nation in 24 years, with a confrontation between North and South Korean troops on their shared border highlighting regional security tensions.

Washington sees the exercises as a response to American support for Ukraine and larger drills with NATO allies

The warning came as French President Emmanuel Macron said Kyiv should be allowed to "neutralise" Russian military bases from where Kremlin troops are firing missiles into Ukraine, and as President Volodymyr Zelensky urged the world not to tire of the war.

On Thursday, Putin arrived in China on a two-day visit as Moscow is seeking more support from President Xi Jinping for the war effort in Ukraine following multiple rounds of Western sanctions.

Putin's war in Ukraine, which began with the February 2022 invasion, is believed to have killed hundreds of thousands of people and has made the Russian president a pariah in much of the world.

However, his handling of the assault against Ukraine was criticized by many in Russia and his reputation was further hit by recent corruption accusations against one of his deputies.

Russian President Vladimir Putin will address the annual Victory Day parade in Moscow on Thursday, an event he hopes will rally patriotism as his forces advance in Ukraine.

Russia's troops are advancing in the eastern Donetsk region as Kyiv awaits the arrival of much-needed US weapons that it hopes will stabilise the fragile front lines.

Russia and China have in recent years ramped up contacts, and their strategic partnership has only grown closer since the invasion of Ukraine.