GLOBAL MARKETS-Shares, dollar struggle on Ukraine anxiety
* European shares fall over Ukraine but head for weekly gain
* Dollar index slips even as yen drifts off session highs
* Bunds gain as investors head for safety
* U.S. stocks expected to open lower, earnings eyed
By Marc Jones
LONDON, April 25 (Reuters) - Heightened tension in Ukraine pushed world shares lower and lifted safe-haven European bonds as well as gold on Friday, taking the shine off what looked set to be an earnings and M&A-driven week of gains for European and U.S. stocks.
Russia warned on Friday that Kiev would face "justice" for Thursday's killing of up to five pro-Russian separatists, while Kiev said Moscow was looking to start World War Three.
European shares tumbled 0.6 percent as concerns mounted that the United States and Europe were readying tougher sanctions on Russia that were bound to be met with retaliatory measures from Moscow.
The DAX in Germany, which has the region's strongest trade ties with Russia, fell 1.4 percent. Продолжение...