The <a href="https://en.wikipedia.org/wiki/Chernobyl_disaster" id="mwARE" rel="mw:WikiLink" title="Chernobyl disaster">Chernobyl disaster</a> occurs in the <a href="https://en.wikipedia.org/wiki/Ukrainian_Soviet_Socialist_Republic" id="mwARI" rel="mw:WikiLink" title="Ukrainian Soviet Socialist Republic">Ukrainian Soviet Socialist Republic</a>.