Russian President Vladimir Putin has argued with his deputy over the speed of test systems in the country. The head of state said it is necessary to speed up the process to ensure that the tests work effectively.

He also said that the new test systems are more sensitive, as they use exclusively domestic material, rather than foreign-made material. The test system will be rolled out across the country over the next few months, according to the Russian president. The tests are expected to be completed by the end of the year, he said.