False.
The status of forces agreement with the old Ukrainian government allowed Russia to deploy troops across the entire Crimean peninsula in certain situations. The violent overthrow of a democratically elected government in Kiev was one of those situations.
Russia chose to deploy its troops in such a way as to not inflame an already tense situation in Kiev and at no time did Russian troop levels exceed the numbers allowed by the status of forces agreement.
Putin admits Russian forces were deployed to Crimea.**Do you ever stop with the lies?
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*note that it is no longer the Kremlin narrative
**note that "deployed to Crimea" does not equate to "deployed to a naval base"