In this article, two Russian information campaigns occurring in Lithuania, in 2005 are analyzed. The first one is related to the May 9th celebration in Moscow, the second one is related to the crash of the Russian fighter in Lithuania. The question is - how and why this diplomatic visit and military incident became information threats and what consequences have they caused. In explaining the reasons for Russian information pressure and its consequences, and in evaluating if it could pose a threat to Lithuania, the perspective of social constructivism is used. In applying the securitization model article analyzes, how did Lithuania and Russia understand the above mentioned events, what kind of behaviour did this understanding provoke and what impact did it make to information security.