Russia has unveiled its new fleet of ‘invisible’ supersonic fighter jets, boasting that they are already the envy of air forces around the world. The £120million Sukhoi-57, which will have a top speed of 1,615 mph, is said to rival America’s F-22 and China’s Chengdu J-20, Kremlin officials say the fifth-generation stealth jet has been ‘christened like a baby after its

birth’ as Su-57 and will undergo another year of testing before it enters military service in 2019. The country’s air force chief Viktor Bondarev described the aircraft as a ‘wonderful machine’ and last month said: ‘Every country probably wants planes such as this, and we have them.’The plane was called ‘PAK FA’ and ‘T-50’ during its developmental stage. Russia says the Su-57 will use state-of-the-art stealth technology to make it hard to track on enemy radars. READ MORE