Belarus and China kicked off 11-day joint military training exercises Monday, Belarus' defense ministry said – with activities taking place just miles from the border of Poland, a NATO and European Union member. The joint anti-terrorist training "Attacking Falcon" exercises in Belarus would see military personnel from both countries "act together" as one unit in certain stages, Major General Vadim Denisenko of the Belarusian military said in a Telegram post. "Events in the world are complex, the situation is complex, therefore, having studied new forms and methods of conducting warfare, here we will work out all these moments considering all that is new that has been learned in the past two years," Denisenko said. The joint exercises are being held at a training ground near the city of Brest on the Belarus-Poland border and some 40 miles from Minsk's border with Ukraine. They come as Russia's invasion of that country more than two years ago has hardened geopolitical divisions and continues to threaten broader regional security. Beijing and Minsk have been tightening their ties in recent years under Chinese leader Xi Jinping and Belarusian President Alexander Lukashenko, both autocrats and strong allies of Russia's Vladimir Putin. The start of the anti-terrorism exercises coincided with a visit by Ukrainian President Volodymyr Zelensky to Warsaw, where he signed a security agreement with Polish Prime Minister Donald Tusk. They also began on the eve of NATO's 75th-anniversary summit in Washington – a gathering where leaders will look to shore up support for Ukraine nearly two and a half years since Russia's invasion. NATO and the EU have long accused Belarus of weaponizing the border by pushing asylum-seekers from third countries to its borders, and the joint exercises will no doubt be seen by some as a further provocation. CNN has reached out to NATO for comment. Belarus has been a critical Russian ally in the Kremlin's war on Ukraine. Moscow partly used Belarus as a launching pad for the full-scale invasion of Ukraine in February 2022 after amassing troops on the Ukrainian border during what it said were joint military exercises. Last year Putin also announced Russia would place tactical nuclear weapons in Belarus. China has emerged as a key diplomatic and economic lifeline for Russia since its invasion of Ukraine, and been accused by Western leaders of bolstering Moscow's war effort through the provision of dual use goods – a charge Beijing denies. Belarus' Ministry of Defense said troops from China's People's Liberation Army arrived in Belarus over the weekend. It published a series of photographs showing Chinese troops offloading equipment from a military cargo aircraft and said the drills will last until July 19. China's Ministry of Defense said on Sunday that the drills will include "hostage rescue operations and counter-terrorism missions." "The training aims to enhance the training levels and coordination capabilities of the participating troops, as well as deepen practical cooperation between the armies of the two countries," it added. Over the weekend, a delegation from China's Central Military Commission also held talks with counterparts in Minsk where the two sides discussed "prospects for Belarusian-Chinese cooperation on military personnel training" and outlined new areas of cooperation, according to Belarus' defense ministry. This latest showing of their security cooperation comes just days after Belarus joined the Beijing and Moscow-backed Shanghai Cooperation Organization (SCO) on Thursday. Founded in 2001 by China, Russia, Kazakhstan, Kyrgyzstan, Tajikistan and Uzbekistan to combat terrorism and promote border security, the SCO has grown in recent years as Beijing and Moscow drive a transformation of the bloc from a regional security club with a focus on Central Asia to a geopolitical counterweight to Western institutions led by the United States and its allies. Belarus' entry in the bloc – hailed by Xi and Lukashenko in a meeting on the sidelines of an SCO summit in Kazakhstan last week – was widely seen by observers as another mark of that transformation. Then, Xi hailed the "great strides" in the relationship between the two countries – a sentiment echoed in a meeting between Chinese Foreign Minister Wang Yi and his newly appointed Belarusian counterpart Maksim Ryzhenkov on Monday in Beijing. Wang and Ryzhenkov agreed that the two sides would "firmly support each other" on issues concerning their core interests and major concerns, according to a readout from China's Foreign Ministry, which also noted their ambition to "reject unilateral hegemony" – a reference to their shared opposition to a world order they see as dominated by the United States. — CNN