most widely used second language in Ukraine
...that although Russian is the most widely used second language in Ukraine, it has no official status in the country?
...that although <a href="./Russian_language" id="mwCzU" rel="mw:WikiLink" title="Russian language">Russian</a> is the <b id="mwCzY"><a href="./Russian_language_in_Ukraine" id="mwCzc" rel="mw:WikiLink" title="Russian language in Ukraine">most widely used second language in Ukraine</a></b>, it has no <a href="./Official_language" id="mwCzg" rel="mw:WikiLink" title="Official language">official status</a> in the country?