The Afghan currency, the Afghani, is considered strong or has experienced periods of strength due to several key factors:

• Implementation of better monetary policies by the Central Bank of Afghanistan, including preventing dollar smuggling and stabilizing the currency market.
• A significant influx of humanitarian aid (about $1.3 billion since August 2021) that provides liquidity and supports the economy.
• Increased trade activities with neighboring countries, boosting demand for the Afghani.
• The Taliban regime’s efforts such as prohibiting the use of foreign currencies like the US dollar and Pakistani rupee in local transactions and controlling the outflow of foreign currency to maintain the Afghani's value.
• Negotiations and partial releases of Afghanistan’s national reserves from abroad have also contributed to stabilizing the economy.
• Decline in dollarization of the economy, enforcing the use of the Afghani for domestic transactions, which has supported its appreciation.
• Despite these factors, economic challenges remain, including inflation and market price rigidity, but the currency’s relative strength has been important for economic growth and trade.

Overall, the combination of foreign aid inflows, monetary controls, trade activities, and policy measures taken by the government and Central Bank have helped the Afghani maintain or increase its value against foreign currencies during certain periods recently.

However, it is important to note that the Afghani has also faced periods of weakness linked to reduced foreign aid and economic instability.

This shows a dynamic picture where the Afghani's strength is influenced by both external financial inflows and internal monetary policy efforts.