Group 1 - The U.S. is preparing to impose new sanctions on Russia's energy sector following President Putin's rejection of a peace agreement regarding Ukraine [4] - The sanctions may target "shadow oil tanker fleets" used for transporting Russian crude oil and the traders facilitating these transactions [4] - New measures could be announced as early as this week [4] Group 2 - Micron Technology reported a strong revenue outlook, with expected revenue between $18.3 billion and $19.1 billion, significantly higher than analysts' average estimate of $14.4 billion [9] - The demand for AI computing hardware is driving growth in the storage chip market, leading to a shortage of personal computer memory chips [9] Group 3 - Amazon is restructuring its AI department, integrating its general AI business with a larger new department that will also include chip development and quantum computing teams [11] - The restructuring follows the announcement of the departure of a key executive, Rohit Prasad, by the end of the year [11] Group 4 - Novartis and Roche are reportedly close to reaching a drug pricing agreement with the U.S. government, which may be announced soon [15] - This agreement could ease trade tensions between the U.S. and Switzerland, with other pharmaceutical companies potentially included in the announcement [15]