European equity markets traded little changed on Monday, with investors staying cautious as tensions between Russia and Ukraine have risen further over the weekend. Amid the investigation into possible war crimes by Russian forces in Ukraine, Western governments are preparing new sanctions against Moscow.

Still, the pan-European was up nearly 0.3% in late morning deals, while US stock index futures were mostly higher in pre-market trading. In individual stocks, shares of Twitter (NYSE:) rallied over 25%, adding more than $8 billion to its market value, after Tesla (NASDAQ:) CEO Elon Musk said he has taken a nearly $3 billion stake in the social media platform to become its largest shareholder.

Meanwhile, the extended gains at the start of the week amid persisting concerns over geopolitics and . The USD index gained nearly 0.25% on the day to approach the 99.00 handle ahead of the North American trading session.

The greenback also derives support from hawkish remarks from the Fed officials over the weekend. The buck could add to gains should the deliver a more aggressive tone from the Federal Reserve on Wednesday. Elsewhere, struggles to regain the upside momentum after strong rejection from this year’s highs seen above $48,000 a week ago.

The pair has been oscillating within a range since then, with bullish attempts attracting fresh selling pressure, suggesting the most popular cryptocurrency is not ready for another rally just yet. On the downside, the key immediate support arrives at $45,500. Bearish risks are limited as long as the prices stay above this zone.