This is the 1756th most frequent Japanese word.
プーチン
"プーチン" is the Japanese katakana for "Putin," referring to the Russian politician Vladimir Putin.
Here, 'プーチン' refers to Vladimir Putin, the individual. '大統領' means 'president.' Thus, 'プーチン大統領' means 'President Putin,' providing a respectful title.
プーチン大統領はロシアのリーダーです。
President Putin is the leader of Russia.
In this case, 'プーチン' serves as a proper noun referring to the person of Vladimir Putin. The sentence focuses on news concerning him.
プーチンに関するニュースを見ました。
I saw news related to Putin.
Here, 'プーチン' is used in a playful context where children are pretending to be him, indicating his recognizability in cultural contexts.