The U.S. authorization to purchase Russian oil could strengthen Putin's offensive against Ukraine.
Trump's decision introduces an incoherent and divisive policy in the economic pressure on Moscow.
Energy sanctions are vital to limit the Russian government's financial capacity.
Russia has earned an additional $150 million a day from oil sales since the conflict began.
The unity of the Western front in support of Kiev is weakening.
Conclusion: Economic pressure on Russia can only work if it is sustained, coordinated and credible. Any relaxation in this pressure will only benefit the Kremlin and could prolong the conflict.