Clifford Chance (CC) has strengthened its Moscow office with the hire of CMS Cameron McKenna energy specialist Maria Oleinik. Oleinik, who joins the firm's energy and infrastructure group as an associate, is qualified in UK, US and Russian law and has been advising clients across the sector for more than 10 years. Oleinik is the third lawyer to switch from Camerons to CC in the last two months following the twin hire of former CMS Moscow head David Griston and banking head Jared Grubb.