GLOBAL MARKETS-Stocks pressured by report on Trump probe, Fed hike, soft US data

* Fed outlines plan to reduce bond holdings

* U.S. retail sales, consumer inflation weak

* Deteriorating U.S. political climate undercuts risk sentiment

* Oil slump on U.S. gasoline inventory

* European shares seen steady to slightly weaker

By Hideyuki Sano

TOKYO, June 15 (Reuters) - U.S. stock futures and Asian shares slid on Thursday, hit by soft U.S. economic data, a relatively hawkish Federal Reserve and a media report that U.S. President Donald Trump is being investigated by a special counsel for possible obstruction of justice.

S&P mini futures dipped as much as 0.3 percent, while MSCI's broadest index of Asia-Pacific shares outside Japan dropped 0.7 percent, led by resource shares.

Japan's Nikkei fell 0.3 percent.

European shares were expected to get off to a tentative start, with spread-betters looking at a flat open in Germany's DAX and a 0.1 percent fall in Britain's FTSE.

The Federal Reserve raised interest rates as expected on Wednesday and gave a first clear outline on its plan to reduce its $4.2-trillion portfolio of bonds.

Fed Chair Janet Yellen said the process could start "relatively soon", while projections of the Fed board members also showed they expect one more rate hike by the end of year.

A majority of Wall Street's top banks now expect the Fed to start reducing re-investment in bonds in September, compared to their previous median forecast of such a move in December.

Yet the Fed's decision and confidence in continued U.S. economic growth was over-shadowed by surprisingly weak data released earlier in the day.

"The Federal Reserve was a little bit more hawkish than market expectations. They are following up on their plan outlined in March even as inflation has fallen short of forecast for three months in a row," said Tomoaki Shishido, senior economist at Nomura Securities.

Consumer prices unexpectedly fell on month in May and the annual increase in core CPI slipped to 1.7 percent, the smallest rise since May 2015, after advancing 1.9 percent in April.

Investors' inflation expectations gauged by the spread between the 10-year inflation-linked bonds and conventional bonds fell to 1.726 percent, completely wiping out its rise since the U.S. presidential election.

Retail sales fell 0.3 percent last month - the largest fall since January 2016 and way below economists' expectations for a 0.1 percent gain - amid declining purchases of motor vehicles and discretionary spending.

Risk sentiment was also hit by fear of more U.S. political turmoil after the Washington Post reported that Trump is being investigated by special counsel Robert Mueller for possible obstruction of justice.