Why is Sergei Shoigu being accused of a Putin putsch plot?

<p>The annual Victory Day parade in Moscow will be a much smaller affair this year, without an intercontinental ballistic missile in sight.</p><p>Why? Well, the threat of a Ukrainian drone attack is certainly one reason. But is there any credibility in reports of another threat - this time against Vladimir Putin himself?</p><p>An anonymous European intelligence agency has claimed the Russian president is spooked over the prospect of a potential coup or even a possible assassination attempt.</p><p>The alleged plotter is being named as former Putin ally and shunned ex-defence minister Sergei Shoigu. But how credible is this report, and is the president's paranoia justified?</p><p>Our Moscow correspondent Ivor Bennett joins Niall to discuss whether Shoigu is really plotting to oust Putin, and what it means if the leader's grip on power is slipping.</p><p>Have you got a question for Niall? Email the show: <a href="mailto:why@sky.uk" rel="noopener noreferrer" target="_blank">why@sky.uk</a></p>