Iran will meet with European Union officials in Brussels on Wednesday in hopes of reviving the scuttled 2015 nuclear deal and lifting sanctions.
Iran's top negotiator, Bagheri Kani, tweeted about the meeting on Monday, calling the talks "result-oriented negotiations".
"Iran is determined to engage in negotiations that would remove unlawful and cruel sanctions in a full [and] effective manner, secure normalisation of trade [and] economic relations [with] Iran, and provide credible guarantee for no further reneging," he said on the social media site.
"The question is if our partners are genuinely ready to fulfil their commitments, including by calling out the non-participant violator to divorce from the past malign policies [and] legacy."
The US and a group of six other countries agreed in 2015 to lift sanctions on Iran in exchange for Tehran limiting its nuclear programme.
In 2018, former US President Donald Trump dropped out of the deal and reimposed sanctions on Iran, blacklisting large swathes of the country's economy, including its shipping industry.
Some in the tanker sector have blamed sanctions for contributing to depressed rates, with older tonnage finding work in blacklisted trades instead of heading to the scrapyard, keeping vessel supply up.
Many have speculated that sanctions relief would raise the supply of oil, helping further boost tanker rates, which have risen recently on the back of increased activity.
Elsewhere, the US sanctions campaign has created compliance issues in the industry, with would-be sanctions evaders using ever more complex schemes to mask their activities.
Talks between the US and Iran, facilitated by the deal's other members were started in April but suspended ahead of Iran's presidential elections in June.
Those elections saw Ebrahim Raisi claim victory. Raisi has been described as a hardliner.
According to data analytics firm Kpler, Iran has bumped up its oil exports in 2021, exporting more oil each month, year-over-year.
The data analytics firm forecasts that Iran will export 25.8m barrels of oil in October, up from the 17.5m barrels exported in October 2020.
The International Monetary Fund predicts the Iranian economy will grow 2.5% in 2021 after expanding by 3.4% in 2020 following two consecutive years of negative growth.
Meanwhile, Iran has reportedly claimed to have enriched uranium beyond the limits laid out in the deal.