WASHINGTON, May 20 (Reuters) - The depth of the differences among Federal Reserve policymakers' views on the direction of interest rates and severity of inflation will be on view on Wednesday with the release of a readout of the most divided meeting in a generation, one that also marked the end of Chair Jerome Powell's leadership tenure.

With Powell's successor Kevin Warsh set to be sworn in on Friday, Wednesday's release of the minutes of the April 28-29 meeting will add critical detail about shifts in two blocs of Fed officials waiting to greet him - a growing one wary of the inflation arising from the war in Iran and of any talk of future rate cuts, and a diminishing one still leaning toward lowering borrowing costs.

Warsh, who says he relishes a "good family fight" and has himself laid out arguments in favor of lower interest rates, will become Fed chair at a White House ceremony hosted by President Donald Trump, who appointed him and who has been explicit in his demands for deep rate cuts. The minutes could show just how hard it will be to prevail in an argument for easier policy, though Trump himself has recently downplayed those expectations.

The Federal Open Market Committee, the Fed's rate-setting body, left its short-term policy rate unchanged in a range of 3.50% to 3.75% last month, but four policymakers dissented, the most since 1992.

Moreover, the dissents were mixed. One official - Governor Stephen Miran, another Trump appointee who will leave the Fed on Friday to vacate a seat for Warsh - dissented in favor, again, of a rate cut. Three others, meanwhile, dissented over the continued use of language in the accompanying policy statement that suggests the Fed still may cut rates.

Those three - and others in the weeks since the meeting - point to inflation that is running well above the Fed's 2% target and likely to move further away from it in the near term thanks to widening price pressures aggravated by the U.S-Israeli-led war on Iran. The conflict has sent oil prices up by more than 50%, and the latest consumer and wholesale inflation data show price pressures have begun widening beyond the energy sector.

They also note a steady jobless rate and two months of stronger-than-expected job creation indicate the employment market remains resilient and is not in need of lower interest rates to prop it up.

A key focus in Wednesday's readout will be a section used to describe the FOMC debate about the outlook for monetary policy. The minutes of the March meeting, for instance, showed an increase from the prior meeting in January in the number of policymakers who felt there was a case for a "two-sided description of the Committee's future interest rate decisions in the postmeeting statement". That indicated that more among them felt a rate hike could be appropriate if inflation were to remain above target.

"While Wednesday's minutes are somewhat stale in light of the solid April jobs report and last week's elevated inflation readings, they will nonetheless be useful for benchmarking the evolving size of the group advocating for more neutral forward guidance," Deutsche Bank analysts wrote ahead of the release.

"As a reminder, three officials dissented to the slight easing bias in the forward guidance language of the April FOMC meeting statement. Since that meeting, the Fedspeak has moved in a somewhat more hawkish direction."

Indeed, after eight years with Powell at the helm, Warsh will convene his first Fed meeting on June 16-17 with no prospect seen for a change in rates, and certainly not a cut.

U.S. and global bond markets, in fact, increasingly reflect a conviction that the Fed and other top central banks will be lifting interest rates before long to lean against war-induced inflation. The yield on the 2-year U.S. Treasury note, a proxy for Fed policy expectations, has shot from just below 3.40% on February 27, the day before the U.S. and Israel launched air strikes against Iran, to a 15-month high above 4.10% on Tuesday.

Meanwhile, a Reuters poll on Tuesday showed a hefty shift among economists away from previously solid expectations for rate cuts this year, with fewer than 50% now projecting a reduction by December, down from two-thirds just a month earlier. Roughly half see no change in rates this year, and a handful of respondents penciled in at least one rate hike.