"I think that for Poroshenko it is a powerful argument that he brought in a fresh person, unjaded, who can look afresh at how the presidential administration has functioned and how it should function," Kyiv-based analyst Volodymyr Fesenko tells RFE/RL.
On the other hand, Lozhkin -- before he sold his stake in Ukraine's United Media Holding (UMH) group just prior to his appointment -- was a media-tycoon who thrived during the presidency of Viktor Yanukovych.
"Did we make this revolution just so the oligarchs could keep their advantages," Ukrainian journalist Oleh Shynkarenko asks, echoing the view of many of the Euromaidan protesters who were already skeptical of Poroshenko, himself a wealthy oligarch.
Ukrainian presidential chiefs of staff have usually been powerful behind-the-scenes political figures. But recent reforms -- particularly the restoration of Ukraine's 2004 constitution -- have aimed to limit the power of the presidential administration and restore balance among Ukraine's government structures.
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Just a few months old, the Russia, Crimea "together forever" mural in Moscow already needing a new paint job: pic.twitter.com/ZZp89LPmQ3
— Howard Amos (@howardamos) June 18, 2014
.@MFA_Ukraine: Docs prove Russian origin of MANPADS used by rebels in east #Ukraine http://t.co/AILQNvDBSw (Ukr/Rus) pic.twitter.com/ZqWzvZX4aZ
— Christopher Miller (@ChristopherJM) June 18, 2014
Prosecutors open case against defense officials over plane shot down near Luhansk: http://t.co/RRrbVRhhGs
— Ukrinform (@UKRINFORM) June 18, 2014
Happy to meet a son alive. Rotation of volunteers to National Guard of Ukraine, via fb page Discover Ukraine. pic.twitter.com/G5amgQ5T2U
— Kateryna_Kruk (@Kateryna_Kruk) June 18, 2014
Happy to meet a son alive. Rotation of volunteers to National Guard of Ukraine, via fb page Discover Ukraine. pic.twitter.com/G5amgQ5T2U
— Kateryna_Kruk (@Kateryna_Kruk) June 18, 2014
Veteran TV man David Chater found neo-Nazis from Russia, Italy in the Azov Battalion in Mariupol http://t.co/JLTuXHJnVL v @novostidnua
— Nikolaus von Twickel (@niktwick) June 18, 2014
@niktwick @novostidnua he called them neo-nazis. he doesn't have anyone on tape saying they believe in national socialism
— James Marson (@marson_jr) June 18, 2014
Ukrainian rebels reject ceasefire offer http://t.co/YOyFTIs3A8 for @dpa_intl
— Nikolaus von Twickel (@niktwick) June 18, 2014
In a new report issued today, the office also speaks about "worrying trends" emerging in Russian-annexed Crimea.
The document covers the period from May 7 to June 7 and is the third to be produced by the 34-strong UN Human Rights Monitoring Mission since it was deployed to Ukraine in March.
UN human rights chief Navi Pillay urged pro-Russian armed groups in the Donetsk and Luhansk regions to "stop taking themselves, and the people living in their regions, down this dead end."
The report also notes that Crimea residents "known for their 'pro-Ukrainian' position are intimidated” and adds that leaders and activists of the indigenous Crimean Tatars face prosecution and limitations on the enjoyment of their cultural rights.
Since Ukraine launched an offensive against separatists in April, at least 356 people, including 86 Ukrainian soldiers, have been killed, said the OHCHR.