I know you're being sarcastic, but vaccines against cancer-causing oncoviruses are not what's usually meant by "cancer vaccines" (though some people will sometimes use the phrase "cancer vaccines" to include that).
Cancer vaccines are more typically things like Imlygic which sets the immune system against melanoma.
They developed what might be the first cancer vaccine
If by "they" you mean Russia, that's not what your source says. It's a press release about Agenus (a US company) licensing their vaccine for production and sale in Russia.
they have entered into a license, development and manufacturing technology transfer agreement for Agenus' Oncophage® (HSPPC-96; vitespen) vaccine