17 journalists have been killed by Russia in Ukraine since 2014. Over 240 journalists have been killed by Israel in Gaza since 2023.

Regarding journalists killed by Russia in Ukraine since 2014, none of the provided sources explicitly confirm the figure of 17 deaths. The sources focus primarily on journalist casualties in Gaza and do not provide detailed or corroborated data on journalist deaths attributed to Russia in Ukraine. Therefore, this part of the claim remains unverified based on the current evidence.

Concerning the claim that over 240 journalists have been killed by Israel in Gaza since 2023, multiple reputable sources provide data that contradicts this number:

The discrepancy suggests that the "over 240" figure may stem from conflating total media workers, including non-journalist personnel, or may be an inflated or unverified estimate. The most reliable and detailed data from CPJ and other journalistic watchdogs indicate a significantly lower death toll.

Overall, while journalist deaths in Gaza during the recent conflict are tragically high and represent a record for recent years, the figure of over 240 is not supported by multiple independent, high-quality sources. The figure of 17 journalists killed by Russia in Ukraine since 2014 cannot be confirmed with the provided data.